I was unable to reproduce with Ubuntu Focal 64 bit as the host. Could you provide the Host OS version. Focal is on a 5.4 kernel, and Bionic should have rolled to a 5.x kernel as well.
my guess at this time is your host is a 32bit (from the armv7l listing in the kernel). if you let me know the Host OS version (not just kernel) I can work on reproducing. I'm flashing a Bionic 18.0.4.5 32bit image now for testing
I was unable to reproduce with Ubuntu Focal 64 bit as the host. Could you provide the Host OS version. Focal is on a 5.4 kernel, and Bionic should have rolled to a 5.x kernel as well.
my guess at this time is your host is a 32bit (from the armv7l listing in the kernel). if you let me know the Host OS version (not just kernel) I can work on reproducing. I'm flashing a Bionic 18.0.4.5 32bit image now for testing